PERFORCE change 57037 for review

[David Xu]

http://perforce.freebsd.org/chv.cgi?CH=57037

Change 57037 by davidxu at davidxu_alona on 2004/07/11 03:49:34

	Add a bit flag THR_SIGNAL_THREAD, libthread_db uses it to identify a
	signal thread.  

Affected files ...

.. //depot/projects/davidxu_ksedbg/src/lib/libpthread/thread/thr_private.h#7 edit
.. //depot/projects/davidxu_ksedbg/src/lib/libpthread/thread/thr_sig.c#3 edit

Differences ...

==== //depot/projects/davidxu_ksedbg/src/lib/libpthread/thread/thr_private.h#7 (text+ko) ====

@@ -430,6 +430,7 @@
 	int	prio;
 	int	suspend;
 #define	THR_STACK_USER		0x100	/* 0xFF reserved for <pthread.h> */
+#define	THR_SIGNAL_THREAD	0x200	/* This is a signal thread */
 	int	flags;
 	void	*arg_attr;
 	void	(*cleanup_attr) ();

==== //depot/projects/davidxu_ksedbg/src/lib/libpthread/thread/thr_sig.c#3 (text+ko) ====

@@ -232,6 +232,7 @@
 	pthread_sigmask(SIG_SETMASK, &sigset, &oldset);
 	pthread_attr_init(&attr);
 	pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
+	attr->flags |= THR_SIGNAL_THREAD;
 	/* sigmask will be inherited */
 	if (pthread_create(&_thr_sig_daemon, &attr, sig_daemon, NULL))
 		PANIC("can not create signal daemon thread!\n");